Liziane Gutierrez claims the R&B singer punched her
when she tried to take a picture with him during a party at the
Palms Casino Resort on Saturday, Billboard reports. She
also says that he then took her phone away.

Police reportedly arrived to the resort to investigate
suspicions of misdemeanor battery and misdemeanor
theft, but were denied access to Brown.

On Sunday, Brown responded to the allegations in a video on
Instagram, which he has since deleted.

"Obviously, somebody is looking to get a check or start
some s--t," Brown said on the video, which TMZ was able to capture before Brown deleted
it.

In it, Brown says he doesn't know Gutierrez, and he calls
her "old" and "ugly." "She probably came to my room and was too
ugly to get in," he said.

He then posted a message on Instagram in which he suggests that he'll sue
"these crazy individuals who keep lying on my name." Here's
his full statement:

"Keeping my circle small in 2016! I'm done taking the care of
grown a-- men. And I'm going to be hella rich after all the
lawsuits I file from these crazy individuals who keep lying on my
name. Happy NEW YEAR! Time for some of us to grow the f--k up!"

TMZ then posted a video response from Gutierrez. In it, she asks
the singer to compare her history to his and urged him
to be "real." She also said that she's getting threats of
violence against her and her son, and asked Brown to tell fans
not to bring her family into the situation.

Brown's manager Mike G also got in on the action on Sunday.
He posted a lengthy statement on Instagram, in which he berated the media for
covering Gutierrez's "false accusation."

Brown's public relations representative also gave a statement to
Billboard. It said the assault allegations
against Brown are "unequivocally untrue" and that her
motive for making them could've been a result of her being kicked
out of the party for being "disruptive and out of
control."

TMZ's source close to Brown said he will be filing a defamation suit against Gutierrez on
Monday.